you can write about the War2. or you can also write about Toyotomi Hideyoshi^^

no topic for me about Japan before 800AD. [Classic] Heian Period(794～1100?) ・Classical Japanese culture, art, poetry, literature. ・・"The Tale of Genji" is one of the oldest novel written by woman in the world. ・・"Japanese poetry" is the shortest poem in the world. [Feudal] Kamakura Period(1200～1333) ・Age of the beginning of Bushi and Samurai. Muromachi Period(1333～1550?) ・no topic for me :P Azuchi Momoyama Period(1550?～1600) ・Age of Lords ・・many wars everywhere in Japan. ・・many heros appeared and died. Edo Period(1600～1868) ・Age of Seclusion ・・Maturity of Bishi culture ・・Peace. Edo(now Tokyo) was one of the biggest(population) city in the world. [Nation state] Meiji Period(1868～1912) ・Meiji Restoration ・・End of Bushi and Samurai. ・・Meiji Constitution was modelled on the constitutions of Germany, France, and the United States. WWI and WWII and bla bla... I agree Chi-san said above. and "The Tale of Genji" is a love story. :)

Writing about the times of the Warring States, 戦国時代 would be interesting where the power struggle of different warlords or 大名 took place.

Yeah, writing about older history would probably be more fun and interesting. Every period has different famous people, ways of life, culture and other differences... You could also compare the present Japan and Japan back then, and maybe understand how it changed (or in some aspects didn't change) so much.

haha.. WW2 was already talked and wrote over times outside and inside of Japan already. and probably you have learned enough of those already. what about Genji 平安時代, it is unique and you can find the differences of its culture of east asia Japan between Western. and you will like to find sophisticated and complicated noble custom. i think you are going to like it :)